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![APC Smart-UPS On-Line 5.4kVA 208V Rackmount 3U UPS with L6-20R/L6-30R, Network Card, SmartSlot, and Rail Kit [TAA]](http://www.avendor.com/cdn/shop/files/files_38396d44-446d-4eb8-b453-042bd9db8f89_{width}x.jpg?v=1750739646)
![APC Smart-UPS On-Line, 5.4kVA, Rackmount 3U, 208V, 2x L6-20R+2x L6-30R NEMA outlets, Network Card+SmartSlot, Extended runtime, W/ rail kit [TAA] Schneider Electric SA](http://www.avendor.com/cdn/shop/files/1086114537_1024x.jpg?v=1749849107)
![APC Smart-UPS On-Line 5.4kVA 208V Rackmount 3U UPS with L6-20R/L6-30R, Network Card, SmartSlot, and Rail Kit [TAA]](http://www.avendor.com/cdn/shop/files/files_00d85e98-b6d0-466f-8db4-6bd6beb0bfab_1024x.jpg?v=1750739642)
![APC Smart-UPS On-Line 5.4kVA 208V Rackmount 3U UPS with L6-20R/L6-30R, Network Card, SmartSlot, and Rail Kit [TAA]](http://www.avendor.com/cdn/shop/files/files_38396d44-446d-4eb8-b453-042bd9db8f89_1024x.jpg?v=1750739646)
Description
The APC Smart-UPS SRT5KRMXLT-A delivers 5.4kVA / 4.8kW of reliable online double-conversion power protection in a 3U rackmount form factor. Engineered for IT, healthcare, industrial, and data center environments, this UPS provides pure sine wave output for mission-critical loads. It features 2x L6-20R and 2x L6-30R NEMA outlets, a pre-installed Network Management Card, SmartSlot for expandability, and internal bypass options.
The system is expandable with external battery packs (not included) and comes complete with rail kit, mounting accessories, and a 3-year UPS / 2-year battery warranty. Made in the USA and compliant with TAA regulations.
| Feature | Details |
|---|---|
| SKU / Model | SRT5KRMXLT-A |
| UPS Type | On-Line Double Conversion |
| Form Factor | Rackmount 3U |
| Input Voltage | 208V (L6-30P) |
| Output Voltage | 208V (configurable to 220V) |
| Output Power | 5.4kVA / 4.8kW |
| Output Connections | 2x NEMA L6-20R, 2x NEMA L6-30R |
| Input Connection | NEMA L6-30P |
| Waveform Output | Pure Sine Wave |
| Bypass Type | Internal (Automatic & Manual) |
| Battery Type | Lead-Acid, 192V |
| Runtime Expandability | Supported (Battery modules sold separately) |
| Included Batteries | 0 (external battery required) |
| Replacement Battery | APCRBC140 |
| Recharge Time | 1.5 hours |
| Communication Interfaces | USB, SmartSlot, Network Management Card |
| Mounting | Rack-mounted with rail kit |
| Color | Black |
| Dimensions (H x W x D) | 5.12 x 17.01 x 28.31 in (13 x 43.2 x 71.9 cm) |
| Weight | 123 lb (55.79 kg) |
| Certifications | ENERGY STAR V2.0, NOM, TAA, BAA Compliant |
| Operating Temp / Humidity | 32–104°F / 0–95% RH (non-condensing) |
| Warranty | 3 years (UPS), 2 years (battery) |
Payment & Security
Your payment information is processed securely, and we do not store credit card details or access your credit card information.
Return Policy (Short Summary)
We offer a 30-day return window for most unopened, factory-sealed items.
Returns must be authorized before shipping back and must include all original packaging and accessories. Opened or used items are not returnable unless defective.
Some products—such as custom orders, special-order items, audio gear, software, and LED video walls—are non-returnable. Non-defective returns may be subject to a 20–30% restocking fee, and customers are responsible for return shipping costs.
For damaged or incorrect items, please contact us immediately.
From Scope to Sign-Off
A structured delivery process designed to reduce risk and keep projects moving.
Plan
Discovery, site review, requirements gathering, and project alignment. We define scope, constraints, and success criteria before any design work begins.
- Discovery calls & stakeholder interviews
- On-site survey & infrastructure review
- Requirements & use-case documentation
- Project scope, timeline & milestone alignment
Engineer
System design, schematics, signal flow, BOM development, and documentation. Every project leaves this phase with a complete engineering package.
- AV system design & signal flow diagrams
- Equipment selection & BOM development
- Rack layout & control system design
- As-built documentation package
Deploy
Procurement, logistics, installation, programming, commissioning, and training. We own the delivery from first shipment to final handoff.
- Authorized procurement & logistics coordination
- Physical installation & cable management
- Control system programming & configuration
- Commissioning, testing & end-user training
Support
Monitoring, maintenance, lifecycle planning, and long-term service agreements. We stay engaged long after project close.
- 24/7 remote system monitoring
- Preventive & reactive maintenance
- Technology lifecycle & refresh planning
- Long-term service level agreements
A decade of delivery — trusted by 275+ clients across industries
